MB 1 Contribute to the safe operation of a ship subject to IGF …. Contribute to the safe...

MB 1 Contribute to the safe

operation of a ship subject to IGF

Code

1. Physical and chemical properties of LNG and other low flash point fuels.

2. Description of fuel and storage systems for cryogenic liquids.

3. Understanding of fuel characteristic presented on a Safety Data Sheet.

1. Physical and chemical properties of LNG

and other low flash point fuels.

IGF Code - International Code of Safety for Ship

Using Gases or Other Low-flashpoint Fuels

International standards for ships using low flash

point fuels other than ships covered by IGC Code

to minimize risk to the ship, its crew and the

environment. • arrangement

• instalation

• control

• monitoring of machinery

• monitoring of equipment

• monitoring of systems

IGF Code

Fuel in the context of the regulations in IGF

Code means natural gas, either in its

liquified or gaseous state.

Natural gas - LNG

Definitions

• Bunkering means the transfer of fuel to a vessel or facility in

the form of LNG or traditional marine fuels such as residual or

distillate fuel oils.

• Dual Fuel Diesel Engine is a diesel engine that can burn

natural gas as fuel with liquid (pilot) fuel and also have the

capability of running on liquid fuel only.

• Low-flashpoint fuel means gaseous or liquid fuel having a

flashpoint lower than otherwise permitted under paragraph

2.1.1 of SOLAS regulation II-2/4.

Low flash point liquids

The flash point of a chemical substance is

the lowest temperature where enough fluid

can evaporate to form a combustible

concentration of gas.

Low – flash point liquids

• Alcohol

• Acetyl

• Ether family

• Gasoline

• Alkanes (methane)

• Acetylene

• Butadiene.

LNG Chemical Composition

Natural gas is a mixture of hydrocarbons

which, when liquefied, form a clear colorless and

odorless liquid.

LNG is usually transported and stored at a

temperature very close to its boiling point at

atmospheric pressure (approximately -160°C).

Typical LNG Chemical

Components and Composition

Boiling point

Occurrence Celsius

[°C]

Fahrenheit

[°F]

Water 100 212

Butane -0.5 31

Ammonia -33 -27

Propane -42 -44

LNG -162 -259

Oxygen -183 -298

Nitrogen -195 -319

Hydrogen -252 -422

Helium -270 -454

Boiling is the rapid

vaporization of a liquid, which

occurs when a liquid is heated

to its boiling point

Typical LNG Density

LNG characteristic

• LNG in liquid state is not flammable and cannot ignite

• In order to burn LNG must first be vaporized, mixed with

air into the correct proportions and then ignited

• Cold vapor is heavier than air and can form flammable

mixtures in low / enclosed spots

• Cold methane vapours cause the moisture in air to

condensate resulting in what appears to be a white

cloud.

LNG as a fuel

LNG has roughly half of the density of

traditional heavy fuel oil, but its caloric value

is roughly 20 percent higher. Considering

both its lower density and higher heating

value, on volumetric basis (m3) roughly 1.8

times more LNG needs to be bunkered to

achieve the same range compared to

bunkering heavy fuel oil.

Conclusions

• First, and most importantly, one must understand that the

very properties which make LNG a good source of

energy can also make it hazardous if not adequately

contained

• LNG, the liquid form of natural gas, is a fossil fuel, like

crude oil other hydrocarbon-based forms of energy and

products

• The “boiling point” of LNG is -162°C; 259°F, which is

considered a cryogenic temperature. At this temperature

(somewhat depending upon its actual composition), LNG

evaporates to convert from a liquid to a vapor

Conclusions

• Conversely, LNG becomes a liquid at these cryogenic

temperatures (-162°C; -259°F) at atmospheric pressure.

As a liquid, it takes up about 1/600th the volume of

natural gas. Consequently, it is generally transported and

stored in a liquid state

• LNG is odorless, colorless, non-corrosive, non-

flammable and non-toxic

2. Storage systems for cryogenic liquids

Storage of fuels

The Interim Guidelines on Safety for Natural Gas

Fuelled Engine Installation in Ships (Resolution

MSC.285(86)) mandate that LNG fuel tanks must

be selected from “Independent Types A, B, or C” of

the IGC Code, chapter 4.

The International Code Of Safety For Ships Using

Gases or Other Low-Flashpoints Fuels (IGF Code)

in addition thereto includes the use of membrane

tanks for such use.

Independent Type 'A'

Type A independent tanks are tanks primarily

designed using classical ship-structural

analysis procedures in accordance with the

requirements of the Administration. Where

such tanks are primarily constructed of plane

surfaces, the design vapor pressure P0 shall

be less than 0.07 MPa

Independent Type 'B'

Type B independent tanks are tanks

designed using model tests, refined

analytical tools and analysis methods to

determine stress levels, fatigue life and

crack propagation characteristics. Where

such tanks are primarily constructed of

plane surfaces (prismatic tanks) the design

vapor pressure P0 shall be less than 0.07

MPa

Independent Type 'B'

Independent Type 'C'

The design basis for type C independent

tanks is based on pressure vessel criteria

modified to include fracture mechanics and

crack propagation criteria

Independent Type 'C'

Sources: http://www.portstrategy.com/news101/lng/successful-end-to-the-rhine-lng-masterplan

100% LNG-fuelled type C tanker EcoLiner.

http://articles.maritimepropulsion.com/article/First-dual-fuel-barge-to-sail-in-Europe69162.aspx

http://www.lngworldnews.com/taylor-whartons-lng-fuel-system-chosen-for-fure-west-conversion/

two 255m3 Type C storage tanks/

Wes Amelie

Wes Amelie

Wes Amelie

Wes Amelie

Wes Amelie

Osteriesland

LNG Pac

M/V Helgoland

Hai Young Shi You tug

Isla Bella fuel tanks

Membrane tanks

• The design basis for membrane containment systems is

that thermal and other expansion or contraction is

compensated for without undue risk of losing the

tightness of the membrane

• The design vapor pressure P0 shall not normally exceed

0.025 MPa. If the hull scantlings are increased

accordingly and consideration is given, where

appropriate, to the strength of the supporting thermal

insulation, P0 may be increased to a higher value but

less than 0.070 MPa

Membrane tanks

Main advantages of membrane are:

• Optimization of the ratio LNG volume

/ space occupied

• Minimum loss of cargo capacity

Acceptable location of the fuel tanks

• The fuel tank(s) shall be located in such a way that the

probability for the tank(s) to be damaged following a

collision or grounding is reduced to a minimum taking

into account the safe operation of the ship and other

hazards that may be relevant to the ship.

• Fuel storage tanks shall be protected against mechanical

damage.

• Fuel storage tanks and or equipment located on open

deck shall be located to ensure sufficient natural

ventilation, so as to prevent accumulation of escaped

gas.

Tanks location

Tank location

Tanks location

Location of fuel piping

• Fuel containment systems, fuel piping and

other fuel sources of release shall be so

located and arranged that released gas is

lead to a safe location in the open air.

• Fuel piping shall be protected against

mechanical damage.

Location of fuel piping

Regulations for location and protection of fuel piping:

1. Fuel pipes shall not be located less than 800 mm from the ship's

side.

2. Fuel piping shall not be led directly through accommodation spaces,

service spaces, electrical equipment rooms or control stations as

defined in the SOLAS Convention.

3. Fuel pipes led through ro-ro spaces, special category spaces and on

open decks shall be protected against mechanical damage.

4. Gas fuel piping in ESD protected machinery spaces shall be located

as far as practicable from the electrical installations and tanks

containing flammable liquids.

5. Gas fuel piping in ESD protected machinery spaces shall be

protected against mechanical damage.

Fuel preparation room

Fuel preparation rooms shall be located

on an open deck, unless those rooms are

arranged and fitted in accordance with the

regulations of this Code for tank connection

spaces.

3. Fuel characteristic presented on a

Material Safety Data Sheet

MSDS

1. Identyfication

2. Hazard(s) Identyfication

3. Composition/Information on Ingredients

4. First Aid Measures

5. Fire – Fighting Measures

6. Accidental Release Measures

7. Handling and Storage

8. Exposure Controls/ Personal Protection

MSDS

9. Physical and Chemical Properties

10. Stability and Reactivity

11. Toxicological Information

12. Ecological Information

13. Disposal Considerations

14. Transport Information

15. Regulatory Information

16. Other Information

MSDS - LNG

Thank you for your

attention Marcin Przywarty

m.przywarty@am.szczecin.pl

Maritime University of Szczecin

MB 3 Apply occupational health

and safety precautions and

measures

• Description of safety means applied during LNG operation

• Basic knowledge on Medical First Aid with references to a

Safety Data Sheets

Safety and security zones

Hazard zone

Zones - defines the general nature (or

properties) of the hazardous material - if its

gas or dust, and the probability of the

hazardous material in the surrounding

atmosphere

IGF Code

• Hazardous area zone 0

• Hazardous area zone 1

• Hazardous area zone 2

Hazard area

Hazardous area means an area in which an explosive gas

atmosphere or a flammable gas (flash point below 60C) is

or may be expected to be present, in quantities such as to

require special precautions for the construction, installation

and use of electrical equipment

Non-hazardous area means an area in which an explosive

gas atmosphere is not expected to be present in quantities

such as to require special precautions for the construction,

installation and use of equipment

Protective Clothing and Equipment

• Eye/Face Protection;

• Skin protection;

• Respiratory Protection;

• Other/General Protection.

Safety work practices

• Enclosed spaces

• Enclosed spaces entry procedures

• Work permits

Work permits

• Hot work

• Cold work

• Electrical isolation

• Other hazardous tasks.

First Aid

• Medical First Aid Guide (MFAG)

• Material Safety Data Sheet (MSDS)

First Aid - MSDS

• Eye Contact

• Skin Contact

• Inhalation

• Ingestion

• Notes to Physician

Eye Contact

Contact with product may cause frostbite. In case of

frostbite or freeze burns, gently soak the eyes with cool to

lukewarm water.

DO NOT WASH THE EYES WITH HOT WATER.

Open eyelids wide to allow liquid to evaporate. If the

person cannot tolerate light, protect the eyes with a

bandage or handkerchief.Do not introduce ointment into

the eyes without medical advice. Seek immediate medical

attention.

Skin contact

Wash off immediately with plenty of water. If skin

irritation persists, call a physician. For dermal contactor

suspected frostbite, remove contaminated clothing and

flush affected areas with lukewarm water.

DO NOT USE HOT WATER.

A physican should see the patient promptly if contact

with the product has resulted in blistering of the dermal

surface or in deep tissue freezing.

WARNING

The burning of any hydrocarbon as a

fuel in an area without adequate ventilation

may result in hazardous levels of

combustion products, including carbon

monoxide, and inadequate oxygen levels,

which may cause loss of consciousness,

serious injury, or death.